I take my dog over a friends house all the time.He got to be good buddies with my friends dog,which happened to have seizures all the time.My friends dog died one night and they buried it in the backyard.
A couple weeks later I brought my dog over there again and my dog went straight to where they had buried 'Bus'.It kinda made me a little teary eyed when it happened.He just laid right on top of where they buried him,as if he knew,which he probably did.He is a ST.Bernard and from what I can tell,he has quite a sniffer.